I'd try steeping some porcini or shitake mushrooms and nori for a while and see if that adds a similar taste, doenjang is wonderful too and will add plenty of umami.
@snottyotter started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I'd try steeping some porcini or shitake mushrooms and nori for a while and see if that adds a similar taste, doenjang is wonderful too and will add plenty of umami.